Grain-binder



(NoModeL) 3 S11eets-Sheet 1.

A. STARK. GRAIN BINDER.

N0. 520,458. Patanted May 29, 1894.

(No Model.) 3 Sheets-Sheet 2.

A. STARK.

GRAIN BINDER.

(No Model.) 3 SheetS -Sheet 3.

A. STARK. GRAIN BINDER. 110,520,458. Patented May 29, 1894.

Nirrr; STATES I PATENT Erich.

-ANDREW STARK, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO THEW'ARDER, BUSHNELL & GLESSNER COMPANY, OF SPRINGFIELD, OHIO.

SPECIFICATION forming part of Letters Batent No. 520,458, dated May 29,1894. Application filed Oct ber 2'7, 1892. Serial No. 450,110. (Nomodel.)

To all whom it may concern:

Be it known that I, ANDREW STARK, a citizen of the United States,residing at Chicago, county of- Cook, and State of Illinois, haveinvented certain new and useful Improvements in Grain-Binders, which arefully set forth in the following specification, reference being had tothe accompanying drawings, forming a part thereof.

In the drawings,Figure 1 is a detail plan of a portion of a grain bindercontaining my invention. Fig. 2 is a front elevation of the samemechanism. Fig. 3 is a forward side elevation of the clutch, the shaftbeing shown in section at the line 3-3 on Fig. 4, the position of theparts being that of rest, and the clutch being shown disengaged, and thetrip hook which holds it thus disengaged being also shown. Fig. 4 is asection at the line 4-4 on Fig. 3, a bolt and a shaft which are cutdiametrically being shown in elevation. Fig. 5 isa view similar to Fig.3, with the revolving clutch dog removed from the shaft. Fig. 6 is asection at the line 6-6 on Fig. 4. Fig. 7 is an elevation of themechanism shown in Fig. 2, the position of theparts being that occupiedat a certain stage of the binding operation. Fig. 8 is a section at theline 8-8 on Fig. 4. Fig. 9 is anelevation of a disk in the clutchingmechanism.

I have shown my improvements as applied to a front geared binder.

A is the binderframe in the customary U- form.

B represents the deck.

0 is the elevator hood or over-deck.

C is a portion of the harvester frame to which attachment may be made,and which extends from front to rear above the elevator at its dischargeside.

It will be understood that the binder is supported on the harvesterframe in any customary manner not specifically shown.

C is an arm which extends from the lower part of the binder gearstandard and is braced by an arm 0 which extends to the upper part ofthe same, said arm being designed to brace or support the binder on theharvester in a manner which will be well understood.

In the drawings there are shown portions of mechanism relating to thebutting devices.

which form no part of theinvention to which this application relates,the same being included in an application filed as a division hereof,serially numbered 467,792, filed March 27,1893. These parts maybementioned to distinguish them from the matter of this invention. Theycomprise the butting board D,witl1 its arm D; the crank D on the pinionD the link D pivoted at d on the bar A of the binder frame; acontrolling link D pivoted on the bar 0 of the harvester frame, andpivotally connected to the link D which latter is connected at the eye01 to the .butting board D.

This invention relates to the tripping, compressing and clutchingdevices of a grain binder.

E is a trip and compress arm.

e is its shaft, which is suitably journaled in the binder frameunderneath the deck, and extends forward from the arm E to its foremostbearing which is obtained on the binder frame A forward of and near thevertical plane of the upright standard A of that frame.

E is a crank or lever arm at the forward end of this shaft, whose hubconstitutes the immediate bearing of the shaft in the binder frame A. v

F is the binder driving cam wheel, which sustains the usualrelation tothe needle rock shaft g, whose crank arm G is actuated by the customarypitman G connected to said wheel F.

H is a lever fulcrumed on the standard A of the binder frame below thebearing of the shaft of the wheel F, having at one end the roll H, whichis actuatedby the cam track F on the wheel F, the otherendof said leverbeing connected by the extensible link J to thetrip-and-compress-lever-arm E. The construction of this extensible linkis peculiar, in that it comprises three parts besides the co-operatingsprings,the yoke J, the rod J which protrudes from the upper end of theyoke and connects with the lever H, and the od J which protrudes fromthe lower end of the yoke and connects with the trip-and-compress leverE. The rods J 2 and J 3 are provided with head blocks 7' and 3'respectively, which are suitably guided in the yoke J, and stoppedagainst the cross-bar j, the block 9' being also stopped at the otherlimit of its movement by the should er 1' on the link sidebars.

J is the compress spring and J the trip spring, said springs beingcoiled respectively about the rods J 2 and J and stopped between theends respectively of the yoke J and the head blocks 7' and j K is thebinder driving shaft; that is to say, the shaft through which power iscommunicated from the continuously operating harvester train to thebinder train, said shaft having continuous rotary motion.

K is a clutch dog fixed on the shaft K and partaking of its continuousrotary motion, and having, at opposite ends, the clutch-engagingabutments K K. The clutch comprises the disk L and the latch L, pivotedto the disk on the stud Z, and having the link L extending from its heelthrough the lug Z on the disk L, and provided with the compressiblespring L interposed between the lug and the shoulder Z on the link,whereby the spring tends to force the heel of thelatch L" away from thecenter of the shaft K, and thereby throw the opposite arm of the latchin toward the shaft. The latch L has a flange, comprising two portionsLand L the former being in an are about the center of the shaft when thelatch is rocked in toward the shaft until its web rests upon the hub ofthe disk L, and the latter extending in an are about the same centerwhen the latch is forced away from the hub to the limit permitted by theconstruction, as hereinafter explained. A shoulder is formed where thesetwo portions of the flange unite, which constitutes a seat Z for theabutments K of the revolving dog K, whereby, when said abutments arethus seated, thedog carries the clutch with it in its rotary motion.

\For a purpose which will be hereinafter more fully explained, thebinder driving sprocket pinion M is detachably but rigidly secured tothe clutch disk L, so that the rotation of the said disk rotates thesprocket pinion and thereby drives the binder mechanism. The entireclutch and sprocket pinionare retained on the shaft K by a cotter pininserted through the latter outside the sprocket pinion. The disk L hasa projecting nose L and the latch L has a nose L When the parts areassembled in operative relation, the nose L rotates in a plane rearwardof the plane of rotation of the nose L as seen in Fig. 4.

N is a lever connected to the end of the lever arm E of the trip andcompress shaft, said connection being conveniently made at the samepoint at which the rod J 3 of the trip and compress link is connected tothe lever arm E, the horizontally bent end of that rod serving as thepivotal connection for both purposes. The entire lever N has its fulcrumon one end of the link 0, which is in the form of a half ring about thebearing of the needle-rock-shaft, the other end of the link beingpivotally connected to the crank arm G of the needle rock shaft. In theposition of rest of the parts, the link 0 and the lever N are mutuallyfixed with respect to the binder frame and with respect to the needlerock shaft, by reason of the pivoting of the lower end of the link onthe needle crank arm, which isthen stationary, and the pivoting of oneend of the lever upon the crank arm E, which is also then stationary,and the pivoting of the link'to the lever, as stated. The end of thislever opposite that at which it is connected to the rod J and the crankarm E, is made in the form of a hook N, and is located in the verticalplane of rotation of the nose L of the latch L.

To the lever N, there is secured a spring finger N which extendsalongside the arm N of saidlever in front of the latter, and is locatedtherefore in the plane of rotation of the nose L of the clutch disk L.The shoulder n of the hook arm N is distant from-the end of the springfar enough so that while the nose L is engaged by the shoulder, and thenose L is engaged by the end of the spring, the clutch latch L is forcedaway from the shaft K far enough to bring the flange L outside the trackof the abutments K of the revolving dog K, and when this is the positionof the parts, therefore, the clutch dog is disengaged from the clutchand the binder is at rest. Any action that lifts the lever arm N of thelever N out of enga e-- ment with the nose L will permit the latch L tobe thrown in by the action of the spring L so that the shoulder Z willstand in the path of rotation of the abutments K the flange L being thenthe boundary of said path, and the abutments will therefore engage thelatch L at that shoulder F", and the dog will thereby rotate the clutchand sprocket pinion and operate the binder mechanism. This result isbrought about by the pressure of the grain against the trip-and-compressarm E, forcing said arm stubbleward and rocking its shaft and throwingdownward the lever arm E, compressing first the trip spring J whosetension will be adjusted according to the degree of compactness and sizeof bundle desired. The rocking of the crank arm downward against theresistance of the spring carries downward the stubbleward end of thelever N, and lifts the grainward hooked end N, releasing the nose L ofthe latch L, and permitting the engagement above described between saidlatch and clutch dog. The binder train being thus brought into action,the rotation of the wheel F causes its camF upon the lever H to pullupward the trip and compress link with a tendency-to rock the trip andcompress arm E grainward toward the binder, compressing meanwhile thecompressor spring J This movement of the compress arm, its rock shaftand the lever arm E, would tend to rock the leverN so as to throw itshooked armE down again into the path of rotation of the nose L ,but thesame movement of the parts which has thus rocked the compress rock shaftand tilted its lever arm E upward, has carried the needle rock shaftcrank G upward, and that,in turn,has lifted the link 0, and with it, thefulcrum of the lever N, so that that lever, instead of being throwndownward, is elevated to the position shown in Fig. 7 entirely out ofthe path of the clutch mechanism. When the binding operation is nearingits closeand the needle rock shaft crank arm G is swinging downwardagain toward its position of rest, the cam F on the wheel F is revolvingtoward the position at which the recess f in the cam track will receivethe abutment of the cam roll H of the lever II. The purpose of this seatis to cause the cam roll, when it lodges therein, to lock the wheel andthereby the binder mechanism as a whole against reverse action. It isevident that this relation of the parts,that is, the seating of the rollin the seat, should occur substantially at the same instant atwhich theclutch latch L is disengaged from the abutment K of the revolving dog K,since, as soon as this disengagement is effected, the movement of thebinder mechanism may independently cease, any movement which would occurafter that being due simply to the momentum of the parts, and being,therefore, entirely uncertain and not to be relied upon to bring thewheel F to locking position. The disengagement of the clutch latch beingefiected by the engagement of the hooked end N with the nose of the1atch,the point at which such disengagement will occur in the rotationof the clutch disk can be fixed with precision, but the connectionbetween the sprocket pinion M and the sprocket wheel F, being made by adraft chain, the variations unavoidable in the construction of theframe, sprocket wheels and chain as well as the Wear in the many pivotsof the latter, render it unsafe to rely upon the precise relationexisting between the position of the sprocket wheel and the clutch diskat one limit of the course of the chain, and the sprocket wheel F at theother limit. In order, therefore, both to make it possible to adjusteach machine to the particular chain placed upon it when the machine isfirst assembled, and also to correct the adjustment to compensate forthe wear of the chain and on the sprockets, from time to time, in orderto produce the action above described as desirable, I make the sprocketrim separate from the clutch disk, and secure the two parts togetherrigidly but adjustably by means of the bolt Z, which serves as the pivotof the latch L to the disk L, said bolt extending to the disk into whichit is driven up to the shoulder Z and, thence through the segmental slotM in the sprocket pinion M, and being retained by a nut Z a segmentalwasher Z being provided, extending over the segmental slot M, andenabling the nut thus to bind the sprocket wheel to the disk at anyposition to which it may be adjusted within the range of the slot M. In

order that reliance need not be placed solely upon the friction of thetwo parts thus bound, I prefer to provide the face of the sprocket rimat the margin of the slot M with serrations m, and on the face of thedisk I make a single tooth Z adapted to engage these serrations, wherebysubstantially positive ongagement is made between the two parts when thenut is drawn tight. In order to prevent the bolt from turning when thebolt is screwed up, and so making it difficult to draw the latter tight,inasmuch as the head is at that time inaccessible so that it cannot beheld, I insert through the bolt below the shoulder Z a pin Z whichprotrudes at one end to the height of the shoulder, and I make, in theface of the boss on the disk on which said shoulder binds, a notch Z toreceive this projection.

It should be observed that during the bind ing operation the grainwardply of said drive chain R is the taut side,theslack being thrown uponthe stubbleward ply, and that, when the hooked end N of the lever Nengages the nose L of thelatch L and discngages the latch from thedriving dog K, the reaction from the tension to which the grainward plyof the chain has been subjected during work will tend to equalize theslack upon the two sides, so that if the parts were constructed toeffect the disengagement of the latch from the dog at the preciseinstant at which the abutment roll H becomes lodged in the seat f of thecam track, such reaction will tend to rotate the sprocket pinion andclutch disk back a little distance and thereby permit the spring L tooperate upon the latch L and throw it inward exposing it to theliability of being engaged again by the clutch dog. To

prevent this, the springfinger N is provided on the lever N, and soproportioned that after the hook arm L has engaged the latch L and thelatter has been partly withdrawn from engagement with the abutment ofthe clutch dog, the end of the spring N will slip down behind the nose Land hold the two noses L and L apart, the spring sliding down on theface of the nose L as fast and as far as the further withdrawal of thenose L permits, thereby retaining all the separation between the nosesWhich is produced, so that when the movementhasprogressed far enough toeffect complete disengagement of the latch L from the clutch dog, andstop the driving action of the dog upon the disk, not only will themomentum of the disk be checked by the engagement of the nose L with thehook of the arm N, but in so far as that momentum might carry the diskfarther, such action will be accompanied by the action of the spring Nfollowing on down the inclined face of the nose L and preventing anyreturn or recoil. The web of the latch L at theheel is extended beyondits-pivot to the point where the link L is connected to it, so that byits collision with the hub of the disk L, it constitutes a stop to limitthe disengaging movement of the latch, and if the momentum of thewheel]? and connectllC ed parts of the binder mechanism should tend tocarry the sprocket wheel and disk beyond the proper point for lockingthe mechanism at rest, such tendency will be overcome and the motionarrested positively when the said heel of the latch collides with thehub of the disk.

I claim 1. In a grain binder, in combination with the trip and compresslever, the rock shaft lever arm and extensible link connectionstherefrom to the cam lever H; the clutch comprising the pivoted latch L,the link 0 having one pivot fixed with respect to the needle rock shaftand accompanying the latter in its rocking movement; the lever Nfulcrumed on said link at a point remote from the said pivot of thelatter, having one end adapted to engage the clutch latch and pivotallyconnected at the other end to the tripand-compress lever arm:substantially as set forth.

2. In combination with the clutch comprising the latch L, the lever Nadapted to engage said latch to disengage it from the clutch dog; thelink 0 pivoted to the needle-rockshaft crank arm and extending part wayaround the bearing of said rock shaft, and-affording a fulcrum for thelever N at the op posite side of said bearing from the links pivot; thetrip rock shaft and its lever arm E which actuates the lever N:substantially as set forth.

5. In combination with the revolving clutch dog and the clutch disk,having the nose L and the spring-actuated clutch latch pivoted tosaiddisk and having the shoulder or seat Z for the clutch dog; the leverN, adapted to engage the nose of the latch as the clutch revolves anddisengages it from the dog, and having the spring finger N adapted tospring down behind said nose L and follow the face of the latter as thelatch is Withdrawn from the clutch dog; whereby the nose is held at thefarthest point from the nose L to which it is removed in the process ofdisengaging the latch from the dog: substantially as set forth.

4:. In combination with the binder driving cam wheel F, the clutchcomprising the revolving dog and the disk, and the clutch latch by whichthey are engaged; the sprocket pinion M, and the chain by which itdrives the wheel F, said sprocket pinion being adjustably secured to theclutch disk concentric therewith: substantially as and for the purposeset forth.

5. In combination, substantially as set forth, the clutch comprising thedisk, and the latch by which it is engaged with the clutch dog; thepinion M on the same shaft with the clutch disk; a bolt on which thepinion is secured to the disk, the pinion having a segmental slot forsaid bolt and a segmental Washer to cover the slot.

6. In combination, substantially as set forth, the clutch comprising theclutch disk L; the clutch latch L; a shouldered bolt by which the latchis pivoted to the disk; the sprocket wheel M on the same shaft with thedisk having a segmental slot in its web, said bolt being extendedthrough said slot and provided with a segmental washer at the outerside: substantially as set forth.

7. In combination with the clutch disk, the sprocket pinion M on thesame shaft having a segmental slot in its web; a bolt extending throughsaid slot and securing the pinion to the disk, the face of one of thetwo parts which are thus secured together being ser- Chicago, Illinois,this 12th day of October, 1892.

ANDREW STARK. Witnesses:

CHAS. S. BURTON, JEAN ELLIOTT.

